body {
    background-image: url(image/background.jpg);
}

header {
    width: 1000px;
    height: 6.25rem;
    margin: 3.125rem auto;
    padding-left: 3.125rem;
}

.spa1 {
    font-size: 24px;
    font-weight: bold;
}

section {
    width: 100%;
    height: 31.25rem;
}

.ancestor {
    margin-top: 1.25rem;
    width: 100%;
    height: 31rem;
    border: #000000 0.625rem;
    text-align: center;
}

.child {
    width: 18.75rem;
    height: 100%;
    background-color: white;
    display: inline-block;
    margin: 0 3.125rem 0 3.125rem;
    border: white 0.125rem;
}

.span-div {
    padding-left: 0.3125rem;
    text-align: left;
    width: 100%;
    height: 1.25rem;
    line-height: 2.5rem
}

.span-div .span-title {
    color: #F39C12;
    font-weight: bold;
}

.span-div .span-foot {
    color: #F39C12;
    float: right;
    padding-right: 1.25rem;
    font-weight: bold;
}

.span-div .span-body {
    padding-left: 1.25rem;
}